How can i access the loop's index when i'm in a second loop? like this:
{% for i in range(0, 3) %}
{% for j in range(0, 9) %}
{{ loop1.index + loop2.index }} // ?
{% endfor %}
{% endfor %}
-
1What is the application of this summation?Peyman Mohamadpour– Peyman Mohamadpour2017-01-12 07:50:54 +00:00Commented Jan 12, 2017 at 7:50
-
@Trix maybe to process linearly a two-dimensional stuff (like image processing): j being the column index while i being the row indexnicolallias– nicolallias2018-10-29 10:12:27 +00:00Commented Oct 29, 2018 at 10:12
Add a comment
|
2 Answers
In fact there's no need to set an extra variable. For two nested loops twig provides the so called parent.loop context.
To access the parents loop.index do this:
{% for i in range(0, 3) %}
{% for j in range(0, 9) %}
{{ loop.parent.loop.index + loop.index }}
{% endfor %}
{% endfor %}
Also refer to the documentation
1 Comment
Will
You can continue stacking
loop.parent if needed. Here's an example of three levels: twigfiddle.com/b8skwhset a variable which hold the first loop.index
{% for i in range(0, 3) %}
{% set loop1 = loop.index %}
{% for j in range(0, 9) %}
{{ loop1 + loop.index }}
{% endfor %}
{% endfor %}
